Kinetic Alfven waves at the low-latitude boundary layer

Details Kinetic Alfven waves at the low-latitude boundary layer Kinetic Alfven waves at the low-latitude boundary layer

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsm11a0323k&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #SM11A-0323

Physics

2724 Magnetopause And Boundary Layers, 2752 Mhd Waves And Instabilities (2149, 6050, 7836), 2753 Numerical Modeling, 7829 Kinetic Waves And Instabilities, 7859 Transport Processes

Scientific paper

In the LLBL for northward IMF, plasma is usually found to be "mixed" with both a low energy magnetosheath component and high energy magnetospheric component. Recent observations have found dawn-dusk asymmetries in the density and temperature of the ion populations, and in situ particle distributions show perpendicular ion heating of low energy ions on the dawnside associated with strong compressional wave activity in the magnetosheath. It is the purpose of this study to investigate energy transport processes that would occur due to mode conversion from compressional waves to kinetic Alfven waves (KAWs) at the LLBL. Using a time- dependent fluid simulation code, we show how such mode conversion at the sharp boundary layer occurs for continuous and impulsive incoming compressional waves from the magnetosheath. In addition, by adopting Kelvin-Helmholtz (KH) vortex structure at the boundary layer, we also examine the wave properties in the small scale plasma structure. Time histories of electric and magnetic field at different spatial locations and wave spectra are presented. The role of KAW on the ion perpendicular heating at the dawnside LLBL is discussed. The results are expected to help further understanding of observed ULF waves by multiple satellites passing through boundary layers.

Affiliated with

Also associated with

No associations

Rating

Kinetic Alfven waves at the low-latitude boundary layer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Kinetic Alfven waves at the low-latitude boundary layer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Kinetic Alfven waves at the low-latitude boundary layer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1420752